This is something interesting I've noticed about the Gen4 Glock. When you reassemble the pistol, sometimes the slide will not go on the frame and something will bind. At first I thought maybe it was the recoil assembly. Well, after tinkering with it for awhile I messed around with the connector. I noticed that if you move the bar forward and recock the frame, the slide assembly goes on easily. Sometimes if you don't, it'll bind. That's not a problem, but just weird to me. I own 8 Gen3 Glocks and none of them have done this to me before. Has anyone else had this happen before? When the slide binds, it's right at the threshold of going back on the slide where the takedown bar is just halfway down.